Microphone grille



FIG. 1 is a front, top, and right side perspective view showing our new design for a microphone grille;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a rear elevational view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken lines in FIGS. 1-4 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a microphone grille, as shown and described. 